Stay-bolt structure



E. l. DODDS.

STAY BOLT STRUCTURE. APPLICATION FILED FEB.I6,192!.

1,4 1 O, 387' Patented Mar. 21, 1922.

IP7- i.

UNITED STATES PATENT OFFICE.

ETHAN I. DODDS, OF CENTRAL VALLEY, NEW YORK, ASSIGNOR T O FIaANNE-RYBOLT COMPANY, OF PITTSBURGH, IENNSYLVANIA.

STAY-BOLT STRUCTURE.

Specification of Letters Iatent.

Patented Mar. 21, 1922.

Application filed February 16, 1921. Serial No. $5,461.

and State of New York, have invented certain new and useful Improvementsin Stay Bolt Structures; and I do hereby declare the following to be afull clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in staybolt construction, theobject being to provide a structure wherein the bearing member for thebolt is initially adjustable in the outer sheet of the boiler, and thebolt longitudinally adjustable in saidbearing member, the bolt beingmade of two sections connected by a link joint whereby either section ofthe bolt may be moved to accommodate itself to the movements of thesheet to which it isattached without necessarily moving the othermember. lVith this object in view my invention consists in the parts andcombinations oi parts as will. be more fully explained and pointed outin the claims.

In the accompanying drawings; Figure 1 is a view in section showing thebearing member projecting from the outer sheet; Figure 2 is a similarview showing the bean ing member flush with the sheet and Figure 3 is adetached view of the bolt and its adjustable collar.

5 represents the outer sheet of a boiler provided with a bolt opening 6,the outer edge of the wall of which may be cut away in the segment of acircle, as shown in Figure 1 to receive the similarly curved lower endof the bearing member 7 or the bolt opening may be of greater diameterto receive the outer curved end of the bearing member 7 as shown inFigure 2.

In Figure 1 I have shown the outer wall of the bearing member with aconv X or curved inner end, and in Figure 2 I have shown the outer wallformed in the arcs of two circles. one to engage the wall of the boltopening where a projecting member is used and the other for flushengagement as in Figure 2. In both instances the sleeve or hearingmemher is welded to the outer sheet by a weld as at 8 in Figure 1, and 8in Figure 2.

In both figuresthe bearing member is provided internally with a conicalseat 9 on which the conical collar 10 rests and is free to turn and moveoutwardly. The inner end of this collar preferably projects through theinner end of the; sleeve and is provided at its outer or thicker endwith slots 11 for the engagement with a spanner wrench employed forscrewing the collar to the outer section 12 of the bolt. This outersection of the bolt has a cylindrical neck threaded to engage the collar10 and is expanded or widened at its inner end and provided with eye 13to receive the. cross bar 14 on the looped end 15 or the inner section16 of the bolt. The eye on section 12, and the looped end of 15 of thesection 16 of the bolt, form a link joint which permits the freemovement of the inner section 16 of the bolt independently of the outersection. The outer end of section 12 of the bolt is provided with agroove 17 for the engagement of a wrench or other tool employed forsecuring the section 16 of the bolt to the inner sheet (not shown) ofthe boiler. It may be screwed to said inner sheet or secured byupsetting in the usual and well known manner. With. this constructionthe bolt may be passed through the bolt opening in the outer sheet andsecured to the inner sheet after which the bearing member is placed andadjusted so that itslong axis will be coincident with the long axis ofthe bolt.

The sequence in which the parts are applied is immaterial providing theopening through the bearing member be large enough for the passage ofthe section 12 of the bolt. If however the bolt opening in the bearingmember be'smaller than section 12 of the bolt the collar 10 will not beapplied until after the bolt has been secured to the inner sheet and thebearing member 7 applied, and adjusted and welded if desired to theouter sheet 5. After the parts have been assembled as disclosed the boltmay be tightened up by turning collar 10 until the latter has a tightlit in the bearing member.

\Vith this construction the bearing member maybe initially adjusted sothat its long axis will conform to the long axis of the bolt and anyslack may be taken up by adjusting the collar 10 on the seat 9. Afterthe parts have been adjusted the two sections of the flexible bolt willbe free to flex or move in- I dependently of each other and the outersection free to move in the bearing member 7.

The bearing member 7 is provided as shown with a'countenbored andthreaded outer end to receive the threaded, cap 18 mi 'ht be resorted toin the relative arrangement ot'parts shown and described w1thoutdeparting from the spirit and scope of my invention hence I would haveit understood that I do not Wish to confine myself to the exact,onstruction and arrangement of parts shown and described but,

Having fully described my invention What I claim as new and desire tosecure by 'iiettersrPatent, is V v i v p p 1. In a staybolt structure,the combination ofaboiler sheet, a bearing member adapted to beinitially adjusted Within a recessedseat in said sheet and thenpermanently secured thereto, a two part bolt having link connection anda colla threaded to the outer end of the outer section otsaid bolt andseated within the bearing'member.

2. In a staybolt structure, the C0131l311121 tion of a boiler sheet, abearing member adapted to be initially adjusted vithin ,a recessed seatin said outer sheet-and then permanently secured thereto, a two partbolt the bolt member;

in a staybolt structure, the combination. oi. a bearing member having aconvex outer face and aninternal tapering seat, a t\ ZQ Pa1b b0lt, themembers thereof being connected-bye linlr olnt, and a tapering collarscrewed to the outer member of the .1 having link connection, and acollar thread, 1 ed to theIouter-end oi? the outersection ofand looselyseated in thebearing member.

in testimony whereof, I have signed this bolt and supported on the.internal tapering seat in the bearing member.

4. In a staybolt structure, the c0mbination of a bearing member having aconvex outer face and an'internal conical seat, a two part bolt themembers thereof being connected by link joint, and a conical collaradjustably secured to the outer section of the bolt and supported on theconical seat in the bearing member. 7 l

In a stay bolt structure, the combina tion of the outer; sheet of aboiler having a bolt opening therein, a bearing member initiallyadjustable in and permanently secured Within said'bolt opening, a twopart bolt, the two parts thereof being connected bye link joint, athreaded collar adj ustably secured to the outer end of the outer mem=ber of saidbolt and supported 011 a seat in said bearing member and acap closing the outer end of the latter.

6,111, 21 staybolt, structure, the combination of the outer sheet of aboiler having a bolt opening the Wall of which isconcave, abearingniember havinga'convex outer well adapted to conform to theconcave seat in theboiler sheet and be initially adjusted and thenpermanently secured therein, a .tWo .bolt the two partsbeing flexiblyconnected, and threaded collar adjustably secured to the outer member ofsaid bolt and loosely supported on a seat in the bearpresence of .asubscribspecification in the ,9; Witness. 7

ETHAN I. DODDS.

l i itness Enwm S. Bron.

